How do you grow your email marketing list at the moment?

SEO for traffic => Exit intent and time-delay popups that offer a free download. It's a pretty proven way to get more email leads. I can elaborate more if you're interested. I've spent a lot of time optimizing this part of the funnel.

Getting my website in front of as many eyeballs as possible. I know that around 20% of them enter their email once they see it. Simple as that.